#define _CRT_SECURE_NO_WARNINGS 1
class Solution {
public:
    int weishu(int num) {
        int cnt = 0;
        while (num > 0) {
            ++cnt;
            num /= 10;
        }
        return cnt;
    }
    int findNumbers(vector<int>& nums) {
        int ans = 0;
        for (auto& x : nums) {
            if (weishu(x) % 2 == 0)
                ++ans;
        }
        return ans;
    }
};